Gaya APA
Piddock, Charles, Oryniak, Caryn. (2012).
Selidik national geographic : wabah .
Washington DC:
National Geographic Society.
Gaya Chicago
Piddock, Charles, Oryniak, Caryn.
Selidik national geographic : wabah.
Washington DC:
National Geographic Society,
2012.
Text.
Gaya MLA
Piddock, Charles, Oryniak, Caryn.
Selidik national geographic : wabah.
Washington DC:
National Geographic Society,
2012.
Text.
Gaya Turabian
Piddock, Charles, Oryniak, Caryn.
Selidik national geographic : wabah.
Washington DC:
National Geographic Society,
2012.
Print.